public class Example5_3 {
    public static void main(String args[]) {
        CheapGoods cheapGoods=new CheapGoods();
        //cheapGoods.weight=198.98;
        cheapGoods.newSetWeight(198);
        System.out.println("对象cheapGoods的weight的值是:"+cheapGoods.weight);
        System.out.println("cheapGoods用子类新增的优惠方法计算价格："+
                cheapGoods.newGetPrice());
        cheapGoods.oldSetWeight(198.987);
        System.out.println("cheapGoods使用继承的方法（无优惠）计算价格："+
                cheapGoods.oldGetPrice());
    }
}
